Diamond Mole

Diamond Mole is Hacksaw Gaming's high-volatility take on the cluster-pays formula, built around a signature trick: a sticky wild that doubles its own multiplier every single time it lands in a winning combination, all the way up to a jaw-dropping 2,048x. Played across a 6-reel grid, wins form whenever five or more matching symbols connect horizontally or vertically — no paylines to track, just clusters bursting and cascading into fresh symbols for as long as the chain keeps going.

The underground treasure-hunting theme is delivered through clean, punchy visuals rather than heavy storytelling. Gemstone colours pop against the grid, the Diamond Wild glows brighter as its multiplier climbs, and the tumbling animations give every cascade a satisfying sense of momentum. It's a slick, modern presentation that puts the mechanics front and centre rather than burying them under theme dressing.

That Diamond Wild Symbol is genuinely the engine of the whole game. It always lands carrying a 1x multiplier, but stays locked in place — sticky — for the rest of the spin sequence even after the symbols underneath it have cleared away. Every time it contributes to a new cluster, its multiplier doubles, and with up to five Diamond Wilds able to be active on the grid at once, a spin that gets going can snowball fast. Layer on two diamond-powered bonus rounds capable of tapping into that same multiplier escalation, and it's easy to see how the slot reaches its stated 25,000x max win.

Volatility is rated High here, and the mechanics back that up — the base game can run quiet for a while as it waits for a wild to land and start compounding, which is the trade-off for a payout ceiling this steep. The 96.31% RTP is a healthy, above-average figure that puts the long-run return well within the range serious slot players look for, even if short sessions can swing hard in either direction given the volatility profile. Stakes span a wide 0.10 to 300 range, giving plenty of room to size bets whether you're testing the water or going in heavy for a shot at the bonus rounds.

Diamond Mole rewards patience and a tolerance for streaky sessions — it's not a game built around frequent small wins, but around the moment a Diamond Wild gets reused three or four times in a row and the multiplier starts to genuinely matter. Before staking anything on chasing that 2,048x wild or the 25,000x overall ceiling, it's well worth loading up the free demo at johnessyslots to see how the sticky-wild escalation actually plays out in practice.